kahdenkertaiseksi

Kahdenkertaiseksi is a translative form of the Finnish adjective kahdenkertainen, meaning twofold or double. It expresses a change of state, indicating that something becomes twice as much or twice as large. The form is used mainly in formal or written Finnish to describe quantities, measurements, or proportions that have doubled.

In practice, kahdenkertaiseksi is used with verbs that denote becoming or changing, such as muuttaa or tulla. For example, Hinta nousi kahdenkertaiseksi (The price rose to double). Kustannukset voivat muuttua kahdenkertaisiksi in contexts where several items or categories are doubling, though singular versus plural forms adapt to the subject: Hinta nousi kahdenkertaiseksi is common for a single measure, while Kustannukset muuttuivat kahdenkertaisiksi is used when referring to multiple costs.

Semantically, kahdenkertaiseksi conveys a precise multiplicative change, typically involving doubling. It is more formal and technical than everyday Finnish alternatives, such as kaksinkertainen (twofold) or kaksinkertaisesti (twofoldly), which are more common in ordinary speech.

Etymology and related forms: the form derives from kahdenkertainen, together with the translative suffix -ksi, which marks change into the stated state. Related terms include kaksinkertainen/kaksinkertaisuus (twofold, twofoldness) and the adverb kahdenkertaisesti (in a twofold manner).

See also: kaksinkertainen, kaksinkertaisuus, kahdenkertaisuus, kahdenkertaisesti.